DOI:
        10.1055/s-00028422
      
      
        Ultrasound International Open
      
      
        
          
            Issue 01 ·
           Volume 05 ·
           January 2019
            
          
           DOI: 10.1055/s-008-41886 
          
          
          
  
    
      
    
  
  
        
        
  
  
  
  
  
  
    
  
  
  
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
      
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
    
  
  
    
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
        
          
            
              
              
              
                
                  
                    
                    
                      
                          
                          
                            
                            Editorial
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E1
      
    
  
  
  
                      
                          
                          
                            
                            Quality Assurance
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E2
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Jenssen, Christian; 
              
            
          
            
              
              Gilja, Odd Helge; 
              
            
          
            
              
              Serra, Andreas L.; 
              
            
          
            
              
              Piscaglia, Fabio; 
              
            
          
            
              
              Dietrich, Christoph F.; 
              
            
          
            
              
              Rudd, Lynne; 
              
            
          
            
              
              Sidhu, Paul S.: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                            
                            Review
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E11
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
          
          
            
              
              Lorentzen, Torben; 
              
            
          
            
              
              Nolsoe, Christian Pallson: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                          
                          
                          
  
  
    
      
        E34
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Nuernberg, Dieter; 
              
            
          
            
              
              Saftoiu, Adrian; 
              
            
          
            
              
              Barreiros, Ana Paula; 
              
            
          
            
              
              Burmester, Eike; 
              
            
          
            
              
              Ivan, Elena Tatiana; 
              
            
          
            
              
              Clevert, Dirk-André; 
              
            
          
            
              
              Dietrich, Christoph F.; 
              
            
          
            
              
              Gilja, Odd Helge; 
              
            
          
            
              
              Lorentzen, Torben; 
              
            
          
            
              
              Maconi, Giovanni; 
              
            
          
            
              
              Mihmanli, Ismail; 
              
            
          
            
              
              Nolsoe, Christian Pallson; 
              
            
          
            
              
              Pfeffer, Frank; 
              
            
          
            
              
              Rafaelsen, Søren Rafael; 
              
            
          
            
              
              Sparchez, Zeno; 
              
            
          
            
              
              Vilmann, Peter; 
              
            
          
            
              
              Waage, Jo Erling Riise: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                            
                            Rapid Communication
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E20
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Hansen, Kristoffer Lindskov; 
              
            
          
            
              
              Juul, Klaus; 
              
            
          
            
              
              Møller-Sørensen, Hasse; 
              
            
          
            
              
              Nilsson, Jens C.; 
              
            
          
            
              
              Jensen, Jørgen Arendt; 
              
            
          
            
              
              Nielsen, Michael Bachmann: 
              
            
          
      
    
    
    
    
      
      
        
      
      
        
        
        
      
    
    
      
    
    
    
    
    
    
    
      
    
   
                      
                          
                          
                            
                            Original Article
                          
                          
                          
                          
                            
                          
                          
                            
                          
                          
                          
                            
                          
                          
                          
                          
  
  
    
      
        E27
      
    
  
  
  
    
    
    
      
    
    
      
        
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
            
              
            
          
          
          
            
              
              Mazzawi, Tarek; 
              
            
          
            
              
              Bartsch, Emily; 
              
            
          
            
              
              Benammi, Sara; 
              
            
          
            
              
              Ferro, Rosa Maria Carrasco; 
              
            
          
            
              
              Nikitina, Ekaterina; 
              
            
          
            
              
              Nimer, Nancy; 
              
            
          
            
              
              Ortega, Lara Jiménez; 
              
            
          
            
              
              Perrotte, Charles; 
              
            
          
            
              
              Pithon, Joäo Vitor; 
              
            
          
            
              
              Rosalina, Safira; 
              
            
          
            
              
              Sharp, Alexis; 
              
            
          
            
              
              Stevano, Reza; 
              
            
          
            
              
              Hatlebakk, Jan Gunnar; 
              
            
          
            
              
              Hausken, Trygve: